What was Thomas Jefferson’s Pivotal Role in Mapping the Louisiana Territory?

Thomas Jefferson, the third President of the United States, played a pivotal role in one of the most famous and consequential explorations in American history – the Lewis and Clark Expedition. This expedition, also known as the Corps of Discovery, was commissioned by Jefferson in 1803 with the goal of exploring and mapping the newly acquired Louisiana Territory and finding a practical route to the Pacific Ocean. Led by Meriwether Lewis and William Clark, the expedition lasted from 1804 to 1806 and covered over 8,000 miles of uncharted territory, leaving a lasting impact on American history and geography.

Richard Bluttal explains.

Thomas Jefferson in later life. Portrait by Thomas Sully.

Thomas Jefferson's interest in the exploration of the American West can be traced back to his early years as a young surveyor and land speculator in Virginia. He understood the strategic importance of expanding American territory westward and believed in the potential for economic growth and scientific discovery in the vast wilderness beyond the Mississippi River. Jefferson's vision for the future of the United States included a nation that stretched from coast to coast, with access to valuable resources and trade routes.

In 1803, Jefferson seized the opportunity to expand the nation's territory when he negotiated the Louisiana Purchase with France, effectively doubling the size of the United States overnight. The acquisition of the Louisiana Territory presented Jefferson with a unique opportunity to explore and map the uncharted lands west of the Mississippi River, which inspired him to commission the Lewis and Clark Expedition.

Meriwether Lewis, a trusted confidant of Jefferson, was chosen to lead the expedition due to his background in the military and his experience as Jefferson's personal secretary. Lewis, in turn, selected William Clark, a seasoned frontiersman and skilled mapmaker, to serve as his co-leader. Together, Lewis and Clark assembled a diverse team of soldiers, interpreters, hunters, and tradesmen to accompany them on their journey into the unknown.

Expedition begins

The Lewis and Clark expedition began in St. Louis, Missouri, where the Corps of Discovery set out on their journey up the Missouri River. The expedition consisted of a diverse group of individuals, including soldiers, boatmen, interpreters, and hunters, as well as Sacagawea, a Shoshone woman who served as a guide and interpreter. Throughout their journey, Lewis and Clark meticulously documented their observations and discoveries, keeping detailed journals that provided valuable insights into the natural and cultural landscape of the American West.

One of the most significant achievements of the Lewis and Clark expedition was the successful establishment of diplomatic relations with Native American tribes along their route. The expedition encountered numerous Native American groups, including the Mandan, Hidatsa, and Shoshone, and engaged in trade and diplomacy with them. Sacagawea's presence was particularly valuable in facilitating communication with the Shoshone tribe, as she was able to interpret and negotiate on behalf of the expedition.

Challenges 

Lewis and Clark faced a myriad of challenges during their historic exploration of the uncharted American West. Venturing into unknown territory presented numerous obstacles that tested the resilience and resourcefulness of the Corps of Discovery. Some of the key challenges they encountered included:

1. Geographic obstacles: The American West was characterized by rugged terrain, dense forests, and wide rivers, making travel difficult and slow. The expedition had to navigate through mountain ranges, cross rivers, and traverse dense forests, often without clear paths or landmarks to guide them.

2. Harsh weather conditions: The expedition faced extreme weather conditions, including scorching heat in the summer and freezing temperatures in the winter. The unpredictable weather made travel challenging and required the expedition to adapt to changing conditions.

3. Limited supplies: The expedition had to contend with limited supplies of food, water, and ammunition, which had to be carefully rationed to ensure the survival of the group. Hunting, fishing, and foraging became essential tasks to supplement their provisions.

4. Encounters with Native American tribes: The expedition encountered numerous Native American tribes along their route, some of whom were initially hostile to the explorers. Communication barriers, cultural differences, and misunderstandings often led to tense interactions, requiring diplomacy and negotiation to maintain peace.

5. Sickness and injuries: Members of the expedition fell ill due to exposure, fatigue, and poor sanitation, with some suffering from injuries sustained during their journey. Medical supplies were limited, and the expedition had to rely on the expertise of their physician, Dr. John Potts, to treat illnesses and injuries.

6. Mapping and navigation: The expedition had to create accurate maps of the region as they traveled through uncharted territory. Lewis and Clark relied on rudimentary instruments, such as compasses and sextants, to determine their position and chart their course, a challenging task in the vast and unfamiliar landscape of the American West.

The expedition also made important scientific discoveries, documenting and collecting specimens of previously unknown plants and animals. The expedition's naturalists, including Meriwether Lewis and William Clark themselves, collected samples of flora and fauna, providing valuable information about the biodiversity of the American West. The expedition also mapped the geography of the region, creating detailed maps that would later be used by settlers and explorers.

Expedition ends

The Lewis and Clark expedition persevered and successfully reached the Pacific Ocean in November 1805. The expedition spent the winter at Fort Clatsop in present-day Oregon before beginning their journey back to St. Louis in the spring of 1806. Along the way, they retraced their steps and encountered new challenges, but ultimately returned to St. Louis in September 1806, completing their historic journey.

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The 1803 Louisiana Purchase: The Start of the American Midwest

The Louisiana Purchase was the purchase of a vast area of land by the United States from Napoleonic France in 1803. While France only occupied a small amount of the territory, it comprised vast swathes of what is now the American Midwest. William Floyd Junior explains the history of the territory and how the US came to acquire it.

The Louisiana Purchase on a modern map. Source: William Morris, available here.

The first administration of Thomas Jefferson (1801-1805) basically turned on one event, the purchase of the Louisiana Territory and control of the Mississippi River. It was the river, which occupied the President’s mind along with its free navigation, which would lead to the acquisition of the vast territory of approximately 828,000 square miles. Jefferson first began contemplating his vision about the time of the Revolution. In confronting the problem of Virginia’s frontiers, he thought of his idea as “Empire of Liberty.” In his first inaugural address, Jefferson spoke of the United States as, “a chosen country, with room enough for our descendants to the hundredth and thousandth generation.”

European Exploration

The story of the Louisiana Territory began as far back as 1519, when a Spanish sea expedition explored the Gulf of Mexico. This would be the first time that Europeans would site the mouth of the Mississippi River. In 1528, there was another Spanish expedition of some three hundred men travelling inland from the coast of Florida. After a torturous expedition, four emaciated survivors would reach a Spanish settlement in Mexico after wondering through southern Louisiana and much of the southwest for eight years.

In 1541, Hernando de Soto, the newly appointed governor of Cuba, organized an expedition of six hundred soldiers for the purpose of exploring the Louisiana territory. De Soto would die the following year of yellow fever. The force would be reduced by hunger, disease, and Native American attacks to about half of its original size, causing it to sail down the Mississippi to safer surroundings.

The first European settlers to move into the Mississippi Valley were French, who would come in from the north instead of the usual southern route. Samuel de Champlain became governor of new France in 1633 and would encourage his countrymen to expand further into the interior.

When King Louis XIV became ruler of France, he moved to shut the Spanish out of North America and curb British expansion. A great Anglo-French rivalry for control of the Mississippi Valley would ensue.

Robert Cavelier, sieur de La Salle, a young adventurer-explorer would name the territory he was exploring, Louisiana after the king. On April 9, 1682, La Salle planted a column and cross-painted it with “the arms of France.” La Salle would also formulate a plan for the colonization of the lower Mississippi Valley. La Salle would be murdered by two of his own men before he could establish settlement at the mouth of the Mississippi River. In the summer of 1684, France made peace with Spain. The peace and LaSalle’s failure led the French government to abandon immediate plans for attacking New Spain by establishing colonies on the lower Mississippi.

In September 1715, after being in power for seventy-two years, Louis XIV died. He would leave France and the empire bankrupt by the cost of years of war around the world. Several years after Louis died, the rivalry between England and France would gain momentum. France would go on to claim the entire Ohio valley. English leaders looked at Louisiana along with Canada as a wall confining their colonies to the Atlantic seaboard. The French continued exploring trying to find a route to the Pacific Ocean. By 1752, they planted the French flag at the foot of the Rocky Mountains. By the early 1790s, a mass migration had started dividing the country.

1800s

By 1800, France would reign supreme in Europe and Napoleon turned his energies to rebuilding his overseas empire. Louisiana and the Floridas were major elements of his grand design centered on Santo Domingo, the richest of the colonies. In the same year, Spain ceded Louisiana to France on October 1, by the Treaty of San Ildefonso. However, Spain refused to part with the Floridas. Napoleon would now mount an expedition to take possession of Louisiana at the port of New Orleans. Jefferson became aware of the retrocession causing a shadow to fall over his administration.

Napoleon planned to build a commercial bloc in the Caribbean Basin that consisted of the strategically important West Indian Islands Martinique and Saint Dominque which would be linked with Louisiana. The French in the Mississippi Valley would be President Jefferson’s first great diplomatic crisis. He had been a long- time friend of France since his days as ambassador in Paris (1784-1789), which made him familiar with French diplomacy and politics.

Although Jefferson had never been west of the Shenandoah Valley, his attitude about the Mississippi Valley and beyond was long-standing. When news that Spain had ceded its rights to Napoleon and France, Jefferson recognized this as a fundamental shift in the strategic situation. It both threatened American security and would block western expansion.

Jefferson’s instructions to Robert Livingston, the newly appointed American ambassador to France were very direct. The fact that France would now control the Louisiana region was a major disaster that “completely reverses all the political relations with the United States and will fill a new epoch in our political course.” It constituted, he believed, the greatest challenge to American independence and national integrity since the American Revolution. Despite prior friendships with France, the moment the French occupied New Orleans, the two nations became enemies.

Monroe mission

Livingston was more than capable, but he was not a Virginian. Jefferson wanted someone in Paris whom he could trust beyond any doubt. In effect, he would order James Monroe, who was at the time Virginia’s governor, to become a special envoy to France. Monroe’s instructions authorized the purchase of New Orleans and as much of the Mississippi Valley as possible. The boundaries of the French acquisition from Spain were not clear, but Jefferson was offering up to ten million dollars.

During the winter and spring of 1803, while the outcome of the Monroe mission was yet to be decided, Jefferson’s management of the prospective crisis was both smart and shrewd. He would see to it that an old French friend, du Pont de Nemours, was provided information about America’s intentions that could be leaked in the corridors of Versailles. 

When the Spanish official governing New Orleans abruptly closed the port to American commerce, Jefferson came under considerable pressure to launch a military expedition to seize both the city and the Floridas, abandoning diplomacy in favor of war with both Spain and France. In spite of Congress authorizing the president to raise eighty thousand volunteers for a military campaign, Jefferson would reject the idea and continue to pursue a peaceful outcome. Time and demography were on America’s side, justifying Jefferson’s patient approach.

Jefferson was also lucky in that Napoleon’s decision was not to just to sell New Orleans but the entire Mississippi Valley and the modern-day American Midwest. In the early morning of April 11, 1803, Napoleon announced to his Finance Minister Barbe-Marbois that, “I renounce Louisiana.” Within hours the French were enquiring if the United States had interest in the entire territory of Louisiana. Napoleon’s abrupt decision was prompted by the resumption of the Anglo-French war. Ambassador Livingston had complained in the past that negotiating with the French was impossible: “There is no people, no Legislature, no counsellors. One man is everything. He seldom asks advice, and never hears it unasked.” This was typical of Napoleon’s all-or-nothing style. The payment that Napoleon would receive would help subsidize his European army. This worked directly to Jefferson’s advantage. Napoleon’s losing of Santo Domingo was another reason why Napoleon was willing to depart with Louisiana.

Agreement

Livingston knew what to do. “The field open to us is infinitely larger than our instructions contemplated,” Livingston would tell Madison, and the chance “must not be missed.” Livingston and Monroe, now in Paris, negotiated a treaty which gave the United States the Louisiana Territory. The area was so big that the borders were not clearly defined by either party, for about fifteen million dollars or three cents an acre.

The news of the signing of the deal that reached Jefferson on July 3, 1803, was official but not direct. The news came in a letter from the two ministers to Rufus King who got the news shortly before leaving London, brought it with him on his return home, and sent it to Madison from New York. The report of the acquisition of territory west of the Mississippi surprised the American people more than it did Jefferson or Madison. They had learned of the prospect a number of weeks earlier and had approved a larger negotiation in a private letter sent to Paris. Nevertheless, Jefferson was still surprised by the scope of the deal.

The news of the Louisiana Purchase was not accepted favorably by everyone. In Boston George Cabot wrote to his friend Rufus King, the leader of New England Federalism, regarding the recent purchase as being advantageous to France. It is like selling us a ship after she is surrounded by a British fleet,” he said. He would also write that France was, “rid of an encumbrance that wounded her pride,” while obtaining money and regaining the friendship of the United States.

As Jefferson was taking in the news, he wrote to Merriwether Lewis concerning his exploration of the newly acquired territory, “In the journey which you are about to undertake for the discovery of the course and source of the Mississipi (sic) and of the most convenient water communication from thence to the Pacific Ocean . . .” This was a letter full of optimism but also realistic. Jefferson had now done all he could to control the largely uncontrollable nature of Lewis’s dangerous mission.

The official documents concerning the deal would reach Washington on July 14 and were not made public. However, a summary of them would be given out and the financial terms made public. The terms included a payment of $11,250,000 to France in six per cent stock, redeemable for fifteen years, and the assumption by the United States of the claims of its citizens against France in the amount of $3,750,000. For a period of twelve years French and Spanish ships and merchandise were to pay no higher duties than American in the parts of the ceded territory. Finally, the inhabitants of Louisiana were to be incorporated with the United States as soon as possible, consistent with the Constitution, and were to be secure in their personal rights in the meantime. The financing was arranged with the Anglo-Dutch Merchant Banks, Barings Brothers and Hopes, which in effect bought Louisiana from France and sold it to the United States, making nearly $3,000,000 from the deal.

Constitutional matters

On January 13, 1803, Jefferson’s Secretary of the Treasury, Albert Gallatin, would write to the President explaining his constitutional position regarding the purchase of the Louisiana Territory. He would sum up his opinion by stating the following:

1st. That the United States as a nation has an inherent right to acquire territory.

2d. That whenever that acquisition is by treaty, the same constituted authorities in whom the treaty-making power is vested have a constitutional right to sanction the acquisition.

3d. That whenever the territory has been acquired, Congress have the power either of admitting into the Union as a new state, or of annexing to a State with the consent of that State, or making regulations for the government of such territory.

Later in January, Jefferson would reply to Gallatin saying, “You are right in my opinion, to Mr. L’s proposition: there is no constitutional difficulty as to the acquisition of territory, and whether where acquired it may be taken into the Union by the Constitution as it now stands, will become a question of expediency. It must be assumed at this point that the administration recognized as constitutional the acquisition of territory by treaty. The point of what should be done with it would not be answered at this point in time. For Jefferson to have suggested any difficulties to Congress at this stage would have been to invite trouble. The Senate would finally approve the treaty by a vote of 24 to 7, sealing the deal.

What do you think of the Louisiana Purchase? Let us know below.

Now read William’s article on three great early influences on Thomas Jefferson here.

Sources

1.     Merrill D. Peterson, Thomas Jefferson & the new nation (New York: Oxford University Press, 1970), 745, 746, 747, 748.

2.     Alexander De Conde, This Affair of Louisiana (New York: Charles Scribner’s Sons, 1976),  4, 5, 6, 7, 13, 15, 20. 

3.     www.loc.gov/collections/louisiana.

4.     Joseph J. Ellis, American Sphinx: The Character of Thomas Jefferson (New York: Alfred A. Knopf, 1997), 243, 244, 245, 246.

5.     Jon Meacham, Thomas Jefferson: The Art of Power (New York: Random House, 2012), 385, 387.

6.     Dumas Malone, Jefferson The President: First Term 1801-1805 (Boston: Little Brown and Company, 1970), 296, 297, 302, 312, 313.

7.     Letter from Thomas Jefferson to Merriwether Lewis, July 4, 1803, National Archives.

8.     Andrew Roberts, Napoleon: A Life (New York: Penguin Group, 2014), 324. 

‘Hoisting of American colors over Louisiana’. New Orleans – Image of the week

This week’s image of the week takes us to the southern US - New Orleans to be exact.

This patriotic painting shows the French tricolore coming down and the American stars and stripes coming up, with a beautiful sky in the background… But what is it about?

The "Hoisting of American Colors over Louisiana" is a painting depicting the raising of the US flag in New Orleans following the Louisiana Purchase, in the main plaza (now Jackson Square). The ceremony took place on March 10, 1804. It was painted by Thure de Thulstrup in 1904 on a commission to commemorate the centennial of the event. The painting has been praised for the research and historical accuracy which went into the period depiction. It is on display in the Cabildo Museum.

The image is in the public domain and available here.

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George Levrier-Jones